[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts.
syzkaller login: [   71.516062][   T24] audit: type=1400 audit(1597977890.085:8): avc:  denied  { execmem } for  pid=6479 comm="syz-executor310" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[   85.757773][ T6479] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88811c533500 (size 224):
  comm "syz-executor310", pid 6480, jiffies 4294945156 (age 13.300s)
  hex dump (first 32 bytes):
    a0 bc 4d 18 81 88 ff ff a0 bc 4d 18 81 88 ff ff  ..M.......M.....
    00 00 b4 2a 81 88 ff ff 00 00 00 00 00 00 00 00  ...*............
  backtrace:
    [<00000000660cc643>] __build_skb+0x1f/0x100
    [<000000005d72f582>] __napi_alloc_skb+0xe5/0x140
    [<000000008b1b73c8>] napi_get_frags+0x3a/0x70
    [<00000000d8726960>] tun_get_user+0xa43/0x1660
    [<00000000df528861>] tun_chr_write_iter+0x66/0xa0
    [<000000003a8abd69>] new_sync_write+0x173/0x210
    [<00000000af58bec7>] __kernel_write+0x140/0x1f0
    [<00000000f7cb733f>] write_pipe_buf+0x61/0x80
    [<00000000d3f1b138>] __splice_from_pipe+0x154/0x290
    [<00000000a0ddfad0>] do_splice+0x772/0x8d0
    [<0000000081acb7c1>] __x64_sys_splice+0xaa/0x110
    [<0000000004d683bb>] do_syscall_64+0x2d/0x70
    [<000000008f18880e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888119227200 (size 224):
  comm "syz-executor310", pid 6529, jiffies 4294945713 (age 7.730s)
  hex dump (first 32 bytes):
    a0 d4 f1 1c 81 88 ff ff a0 d4 f1 1c 81 88 ff ff  ................
    00 80 1e 1b 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000660cc643>] __build_skb+0x1f/0x100
    [<000000005d72f582>] __napi_alloc_skb+0xe5/0x140
    [<000000008b1b73c8>] napi_get_frags+0x3a/0x70
    [<00000000d8726960>] tun_get_user+0xa43/0x1660
    [<00000000df528861>] tun_chr_write_iter+0x66/0xa0
    [<000000003a8abd69>] new_sync_write+0x173/0x210
    [<00000000af58bec7>] __kernel_write+0x140/0x1f0
    [<00000000f7cb733f>] write_pipe_buf+0x61/0x80
    [<00000000d3f1b138>] __splice_from_pipe+0x154/0x290
    [<00000000a0ddfad0>] do_splice+0x772/0x8d0
    [<0000000081acb7c1>] __x64_sys_splice+0xaa/0x110
    [<0000000004d683bb>] do_syscall_64+0x2d/0x70
    [<000000008f18880e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

[   92.162301][ T6479] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)